Bicycle wheel particularly for racing and mountain bicycle

Abstract

A bicycle wheel, particularly for racing and mountain bicycle, comprising a hub ( 3 ) that has two flanges ( 4,5 ) connected to a rim ( 2 ) by way of wire spokes, said wire spokes forming a first plurality of radial elements ( 6 ), which are mutually angularly equidistant by a preset angle and connect said rim ( 2 ) to the first flange ( 4 ) of said hub ( 3 ), and a second plurality of radial elements ( 6 ), which are mutually angularly equidistant by said angle, are offset by half of said angle with respect to said first plurality and connect said rim ( 2 ) to the second flange ( 5 ) of said hub ( 3 ), each one of said radial elements ( 6 ) being constituted by a first wire spoke ( 7 ) and a second wire spoke ( 8 ) which are substantially parallel.

1 . A bicycle wheel, particularly for racing and mountain bicycle, comprising a hub that has two flanges connected to a rim by way of wire spokes, characterized in that said wire spokes form a first plurality of radial elements, which are mutually angularly equidistant by a peset angle and connect said rim to the first flange of said hub, and a second plurality of radial elements, which are mutually angularly equidistant by said angle, are offset by half of said angle with respect to said first plurality and connect said rim to the second flange of said hub, each one of said radial elements being constituted by a first wire spoke and a second wire spoke which are substantially parallel.  
   
   
       2 . The wheel according to  claim 1 , characterized in that said first wire spoke and said second wire spoke of each one of said radial elements are engaged on opposite sides with the respective flange and in that said first wire spoke of one element is engaged with said flange in a position that is intermediate with respect to the engagement points of said first and second spokes of the contiguous element.  
   
   
       3 . The wheel according to  claim 1 , characterized in that said first wire spoke and said second wire spoke of alternated of said radial elements are engaged on a same side of said flange, the remaining radial elements being engaged with the opposite side of said flange  
   
   
       4 . The wheel according to  claim 2 , characterized in that said first wire spoke and said second wire spoke have a proximal end that is associated with said hub and a distal end that is proximate to said rim, said proximal end being folded and inserted in a respective peripheral engagement hole provided in said flange, said distal end being screwed into a nipple that is rigidly coupled to said rim, said first wire spoke and said second wire spoke forming, at said proximal ends, larger portions for abutment respectively against the inner face and the outer face of said flange.  
   
   
       5 . The wheel according to  claim 2 , characterized in that said holes are distributed, on each one of said flanges, in angularly equidistant pairs, the first wire spoke of one element and the second wire spoke of the contiguous element being engaged respectively in each one of said pairs of holes, so as to cross without mutual contact.  
   
   
       6 . The wheel according to  claim 1 , characterized in that each one of said wire spokes has a circular transverse cross-section at said distal end and said proximal end, and a substantially flat cross-section in the central portion.  
   
   
       7 . The wheel according to  claim 2 , characterized in that said nipples are distributed, along said rim, in pairs that are angularly mutually equidistant for fixing respectively said first wire spoke and said second wire spoke of each one of said radial elements.  
   
   
       8 . The wheel according to  claim 2 , characterized in that said rim is internally hollow, has a peripheral groove for the application of the tire and is affected by a plurality of radial openings for accommodating said nipples.